There has been considerable work on developing channel models for terahertz frequencies over the past few years such as ray tracing [1]}, [2]}, [3]}, empirical fitting using free-space models [4]}, [5]}, [6]} and others [7]}, [8]}, [9]}, [10]}, [11]}, [12]}. These models typically have to account for the specific impairments suffered by terahertz radiation such as high path loss [13]}, atmospheric absorption [6]}, reflection from indoor building material [15]}, [16]}, time dispersion [17]}, and RF impairments [18]}. Other papers have reported on measurements and modeling for specific use scenarios. For instance, [6]} reports on long range (110m) terahertz links upto 1 THz, [8]}, [10]} studies LoS and NLoS channels around vehicles, or train-to-infrastructure [9]}, rack-to-rack and blade-to-blade communication in data centers [12]}, and device-to-device communication [1]}.
